[Added] PetMenuComponent
[Added] isPet method to AiAgent
[Fixed] Pets can no longer be tamed, milked, or harvested
[Fixed] killing a pet no longer yields xp or loot
[Added] Pet's vitality is now decremented on death

Change-Id: I60c6d369e9896ecf02ab146d3ab99053e63c6306
Merge "[Added] PetMenuComponent [Added] isPet method to AiAgent [Fixed] Pets can no longer be tamed, milked, or harvested [Fixed] killing a pet no longer yields xp or loot [Added] Pet's vitality is now decremented on death" into unstable